| 摘要 |
<p>A variant and so-called 'escape mutant' HBsAg protein or fragment thereof displaying the antigenicity of hepatitis B virus surface antigen is disclosed, in which the mutant protein or fragment thereof (mHBsAg) comprises a modified 'a' determinant in which at least two amino acids are inserted downstream of position (122) of the wild type HBsAg sequence. A vaccine comprising the mHBsAg is provided, as is a kit for diagnostic in vitro detection of anti-mHBsAg antibodies and an antibody preparation comprising anti-mHBsAg antibodies.</p> |
